CN1086493C - Intelligent composite multiple-sensor fire detector - Google Patents
Intelligent composite multiple-sensor fire detector Download PDFInfo
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- CN1086493C CN1086493C CN 97121828 CN97121828A CN1086493C CN 1086493 C CN1086493 C CN 1086493C CN 97121828 CN97121828 CN 97121828 CN 97121828 A CN97121828 A CN 97121828A CN 1086493 C CN1086493 C CN 1086493C
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Abstract
The present invention relates to an intelligent composite multi-sensor fire detector suitable for a Lon Works fire fighting detecting and controlling network. The intelligent composite multi-sensor fire detector comprises a casing, a wire mesh, a Neuron C chip, a communication receiver/emitter, an external memory, an external clock, various sensor driving power supplies, a sensor signal collecting device, a sensor assembly and a control signal output interface. A LonTalk communication protocol, application software, relevant data and measured values are stored in the external memory. The sensor outputs data groups which include various sensor measured values to a main controller, which provides a reliable gist for the quantitative and qualitative analysis of the main controller to judge and monitor a personnel decision. Therefore, the early forecast can be realized, a false alarm is eliminated, and no alarm leakage exists.
Description
Technical field
The present invention relates to a kind of warning sniffer that catches fire.
Background technology
A kind of known device of surveying that comprises misfire sensor and non-misfire sensor that is used to catch fire is Chinese patent CN1129833A.This FUSION WITH MULTISENSOR DETECTION device comprises: first sensor--catch fire, and gas, temperature is invaded sensor; Second sensor--humidity, the ambient contamination level between round-the-clock, or does not have sunlight or the people is not arranged.Catch fire or the output of gaseous state can only be worked when being not the output of environmental sensor from second sensor from the expression of first sensor.In the scheme, by the circuit of carrying out AND function the output of two kinds of sensors is linked up, in another kind of scheme, described device can comprise the output control element that is used to handle from two kinds of sensors.Control module can be provided as programmable microprocessor.In the another scheme, output can be transferred to a remote control fire control panel and be handled by it.These sensors can place in the same institute house together or place respectively in the different houses, also can be in same housing.
In said apparatus,, can partly eliminate the adverse effect of environmental factor, thereby reduce wrong report misfire sensor validity owing to adopted the sensor of number of different types especially to be referred to as the employing of environmental sensor.
But artificial misfire sensor and environmental sensor that sensor regions is divided in the said apparatus; and the expression of first sensor is caught fire or gaseous state output can only be worked when being not environmental sensor output from second sensor; therefore when having reduced wrong report; lie dormant again and incur loss through delay the crisis of reporting to the police; this is very dangerous to fast the catching fire of some velocity of propagation.Fig. 1 is a preferred configuration of said apparatus, comprises temperature sensor 60, humidity sensor 54, photoelectric smoke sensor 52 and control circuit 40.The output rate of change of control circuit 40 monitoring humidity sensors 54 and temperature sensor 60 control circuits, 40 decision humidity sensors 54 and temperature sensor 60.
The principle of work of illustrating among the CN1129833A is: if the rate of change of humidity sensor and temperature sensor has all surpassed predetermined value separately, the warning that postpones all response smoke transducers 52 in the output alarm signal processing before gone up online 40a by control circuit 40.If the rate of change of humidity sensor 54 is higher than the rate of change of predetermined value and temperature sensor 60 and is higher than predetermined value, then cohesion will take place, the All Alerts that control circuit 40 temporary delays take place because this warning may since cohesion cause, and do not smolder.
When cohesion is determined to be existence, postpone to be limited to the time cycle.Control circuit 40 monitoring humidity sensors 54, temperature sensor 60, when smoke transducer 52 and elapsed time will eliminate delay with decision.
If sound all clear in the smoke transducer predetermined time cycle then return normally, then postpone to be set to zero.If the rate of change in rate of change in humidity sensor and the temperature sensor all drops to zero or reach negative value, then in smoke-detectors will return the normal time, postpone to be limited to one additional 60 seconds.
This shows, in said apparatus, set up two kinds of logical relations, the one, the logical relation of cohesion and humidity rate of change, rate of temperature change; The 2nd, optical detector of fire smoke output and the logical relation of condensing, these two kinds of logical relations are realized by control circuit 40.
But, when the real work situation of optical detector of fire smoke is analyzed, will find that above-mentioned logical relation is always not effective.As everyone knows, the gas that optical detector of fire smoke is experienced may be the potpourri of smog and damp atmosphere, also has other material, as dust etc.In this case, its output information has comprised the information of the information of catching fire and humidity effect, and according to the logical relation that this device is provided with, the warning of the information of catching fire will be delayed.Fast catching fire will be dangerous to burning rate for this.
Detection is very complicated process.Its complicacy is:
(1) catches fire phenomenon when existing in nothing, fire detector is worked under the normal atmosphere state, and the state right and wrong of atmosphere are permanent, promptly describe the parameter of atmospheric condition: pressure p, temperature t, air velocity v and relative humidity d are in time with spatial position change; The system of equations that can only form with one group of time, function of spatial position is in to describe.
(2) combustion phenomena of catching fire is a kind of unstable combustion phenomenon, and equally also right and wrong are permanent, also can only represent also there is not this mathematical description at present with one group of function of time.
(3) exist when catching fire in the environment of detector monitors, what enter detector no longer is simple air, but the potpourri of air and products of combustion, the state of this potpourri also right and wrong is permanent.
So far also do not have to supply the mathematical model of utilization with the potpourri of air and products of combustion under the unstable combustion phenomenon of catching fire relevant and the condition of catching fire.
Therefore, up to the present, people can't set up quantitative relation and the logical relation of determining between the output signal of different fire detectors.Therefore, be based upon the possibility that will inevitably there be wrong report in fire detecting and alarm method on the logical relation basis of sensor signal.
Fire detecting system is important safety monitoring assembly, and it should have early prediction, prevent the ability reporting by mistake and do not fail to report.Must seek new fire detecting method and detector for this reason.
Summary of the invention
The object of the present invention is to provide a kind of early prediction that has, the intelligent composite multiple-sensor fire detector of eliminating wrong report and not failing to report.
The present invention includes: shell (1), wire netting (2), sensor (9), control circuit and printed circuit board (11); It is characterized in that: described control circuit partly comprises: the neuron chip Neuronc3 that is respectively applied for network service management, user's service and the communication supervisory ISO/OSI of the meeting seven layer model of chip internal; The multiple sensor drive power supply (5) independently separately that is controlled by neuron chip (3); Multiple sensors combination (9); Peripheral control signal input/output interface (8) as output contact; Communication interface (4); Collecting sensor signal device (7) and external clock (10).Described sensor combinations (9) must comprise temperature sensor and humidity sensor; The control end of described sensor drive power supply (5) is connected with the end of Neuronc (3), and output terminal is connected with the probe power end; Data output in the collecting sensor signal device (7), clock, selecting side connect with the corresponding pin of Neuronc (3) respectively; Output terminal in the sensor combinations (9) is connected with corresponding end in the data collector (7); Communication interface (4) is connected with the corresponding end of Neuronc (3); Output interface (8) connects and composes long-range driving interface, serial output interface with the corresponding end of Neuronc (3); External clock (10) is connected with the corresponding end of Neuronc (3).
Neuron chip 3NeuronC meets the ISO/OSI seven layer model, is integrated with three microprocessors, is respectively applied for network service management, user's service and chip internal telecommunication management, and Neuron C chip has abundant I/O and various control target.Communication protocol is LonTalk.Neron C chip and LonTalk communication protocol are the core of LonWorks network control technology and the basis that technology is used.Communication interface (4), outer clock circuit (10) are to support that Neuron C chip operation is necessary, and some chip be should also provide data file (6).Communication interface (4) claims transceiver again, is the known products of LonWorks technical support, can be applicable to respectively that transmission such as twisted-pair feeder, line of electric force, wireless, concentric cable, optical fiber pass medium.The 3150 serial Neuron C chips that Motorola Inc. produces need add data file, be used to deposit LonTalk communication and agreement and application program, the present invention also is used to deposit the fair curve of various sensors, and data and necessary mathematical formulae are deposited the measurement result of each sensor.
Sensor drive power supply (5) comprises that separately independently square wave power, the pulse power, constant voltage source, variable-voltage power supply are to satisfy the different sensors need of work, and described sensor drive power supply (5) is by neuron chip 3 controls.Employing power line receipts/when sending out device, the sensor drive power supply is powered by receiving/send out device, otherwise external power supply should be provided.
Collecting sensor signal device 7 is made up of multiway analog switch, wave filter, signal amplifier, sampling holder, A/D conversion equipment.
Peripheral control signal input/output interface (8) is output contact or output circuit.
The sensor combinations of described number of different types (9) comprises three class sensors, the humidity sensor of measurement gas state parameter and temperature sensor; Measure the combustion product gas sensor, measure the ionic smoke sensor sensor of smog, photoelectric sensor; Measure combustible gas methane, fuel-steam, alcohol steam absorption type sensor.
The compound fire detector of the intelligence sensor that the present invention relates to must dispose humidity sensor and temperature sensor; And should comprise the combination of other sensors of various types again.
Gas sensor comprises CO
2, CO, SO
2, methane, fuel-steam, alcohol vapour absorption sensor.
Ion smoke detector comprises double source two chamber, single source single chamber, ionic smoke sensor devices and comprises a radioactive source, single source single chamber ionic smoke sensor sensor of two electrodes.
Photoelectric sensor comprises reflection-type and Sun-shading type photoelectric smoke sensor and red, ultraviolet flame sensor.
When adopting single source single chamber ionic smoke sensor sensor,, I-I (d, y) v=v under the standard state should be arranged also except that having the calibration curve
oThe curve group, wherein I is ion chamber's electric current, d relative humidity, y smoke density, V voltage, V
oThe expression operating voltage, standard state is meant the test condition of the 4th, 1,3 and 4,1,2 regulations among the BG4715-93.
The intelligent composite multiple-sensor fire detector that the present invention relates to adopts temperature sensor and humidity sensor as basic detecting element, is used for measurement gas humidity and temperature.As among the CN1129833A humidity sensor is not defined as environment among the present invention and passes sensor, temperature sensor is defined as misfire sensor, in fact, the two all can be used for environment measurement, also can be used to the measurement of catching fire.In the intelligent multisensor complex detector that the present invention relates to, humidity sensor mainly is with other sensor of opposing: the humidity correction is carried out in the output of gas sensor, ionic smoke sensor sensor, and is most important to preventing to report by mistake to obtain correct measurement result.The output of temperature sensor is over time for differentiating that the condition of a fire provides important evidence.In the present invention, temperature also is used as the limiting alarm parameter, eliminates contingent failing to report.
In the room conditioning system design to no specific (special) requirements, the part of the test macro that humidity sensor that the intelligent multisensor complex detector that the present invention relates to comprises and temperature sensor can be used as air-conditioning system is used.Thereby saved the money of establishing of air-conditioning system, and improved the economic worth of intelligent multisensor complex detector.
In the intelligent multisensor complex detector that the present invention relates to, the output of CO sensor is also eliminated as the limiting alarm parameter and is failed to report except that as the monitoring of catching fire.
Enriched O/I and target pattern resource in view of neuron chip has, sensor of the present invention also provides some control function, and wherein the control function to ventilating system plays an important role to preventing wrong report and failing to report.In air conditioner surroundings, because the effect that waters down of fresh air, and cause the ability drop of detector to catching fire and surveying.The intelligent composite multiple-sensor fire detector that the present invention relates to provides the control function to return air door and air outlet, can improve the validity of detection in air conditioner surroundings.Its method is: when the measurement result of temperature-sensitive sensor, sense smoke sensor or other sensors meets or exceeds setting value, promptly close return air door and air inlet, because fresh air no longer enters, thereby the measurement result of each sensor will inevitably change, and just can differentiate fire information effectively according to the result of this variation.
The intelligent composite multiple-sensor fire detector that the present invention relates to provides the sensor measurement of representing with engineering unit continuously, therefore can face the rank value to a plurality of warnings of each sensor quantitative setting in any detector.The positive consequence of bringing thus is:
1. can be to being in the different operating condition in the same system or having the compound fire detector of intelligence sensor of different request for utilizations to give different weights, and different warning critical values is set, thus make system works reasonable.
2. by different warning critical values are set, obtain certain early prediction ability.
3. judgement and the decision-making for master controller and managerial personnel provides quantitatively, and the qualitative analysis foundation improves the reliability of decision-making.Especially provide the foundation for monitoring personnel participative decision making.For firing detection system, people's participative decision making is indispensable, and the people is that any equipment is irreplaceable, monitors the reliability that the good general greatly improves fire detecting system that adds of personnel's participative decision making function.
4. lay a good foundation for setting up three grades of (detector, master controller, monitoring personnel) decision systems of detection control.
Description of drawings
Fig. 1 is the theory diagram of traditional fire detector;
Fig. 2 is an intelligent composite multiple-sensor fire detector theory diagram provided by the present invention;
Fig. 3, the 4th, one of intelligent composite multiple-sensor fire detector embodiment provided by the invention.
Specific embodiment
The foundation that solves task of the present invention is: from the information that detector obtains, differentiating and extract the information of catching fire should be based on correct measuring method and measurement result.Therefore the same with industrial monitoring system, must set up a complete measuring system, this system must comprise following each several part:
(1) adopts sensing element number of different types, dependable performance.Wherein must comprise measurement gas state (pressure, temperature, relative humidity etc.) and characterize combustion characteristic (as smog, CO
2, CO, SO
2, burning optical characteristics etc.) sensor.
(2) complete signal acquiring system (comprising multiway analog switch, isolator, amplifier, sampling holder, A/D conversion etc.).
(3) database in order to sensor output signal is revised.
(4) arithmetic unit.
Database and arithmetic unit can be realized with computing machine, that but most of firing detection systems can comprise is hundreds of, so that thousands of detectors, when adopting the multisensor complex detector, the sensor input will be several times to be increased, so central computer that just need have enough abilities, this can cause the increase of cost and technical complexity, therefore, give each detector respectively with the function of central computer, to be a kind of effective solution, this be based on chip technology, microprocessing and the communication technology.Neuron chip appear as design, manufacturing structure is simple, volume is little, cost low (having comparability with existing sensors), reliable operation, long-life intelligent multisensor complex detector provide technical foundation.
Fig. 2 is the block diagram that is applicable to a kind of intelligent composite multiple-sensor fire detector that uses in the fire controll system of setting up with LonWorks measurement and control network technology that the present invention relates to.1 is shell among the figure, 2 wire nettings, 3 neuron chip Neuron C, 4 communication interfaces, kind more than 5 is sensor drive power supply independently separately, 6 data file, 7 collecting sensor signal devices, 8 peripheral control signal input/output interfaces, 9 number of different types sensor combinations, 10 external clocks.Except that 1,2, other each parts all are connected with printed circuit board 11, and printed circuit board is fixed on the shell 1.Described sensor combinations (9) must comprise temperature sensor and humidity sensor; The control end of described sensor drive power supply (5) is connected with the end of Neuronc (3), and output terminal is connected with the probe power end; Data output in the collecting sensor signal device (7), clock, selecting side connect with the corresponding pin of Neuronc (3) respectively; Output terminal in the sensor combinations (9) is connected with corresponding end in the data collector (7); Communication interface (4) is connected with the corresponding end of Neuronc (3); Output interface (8) connects and composes long-range driving interface, serial output interface with the corresponding end of Neuronc (3); External clock (10) is connected with the corresponding end of Neuronc (3).
The Intelligent Composite fire detector that the present invention relates to is based on LonWorks Control Network technology, this network technology is adopted as industry standard (SMEI-61) by SEMI, indicating LonWorks in the standard is to reach sensor in the equipment, the approval bus of actuator and instrument between the connection device.This shows, what the present invention relates to is that the intelligent composite multiple-sensor fire detector of core satisfies the SEMI technical standard with neuron Neuron C chip, and can use in the LonWorks Control Network, and this network might not be the fire-fighting dedicated network.LONWORKS Control Network technology is a technology geared to the 21st century, and the intelligent composite multiple-sensor fire detector that the present invention relates to changes provide condition by bus-type to networking for the fire-fighting TT﹠C system.The networking of fire-fighting TT﹠C system will greatly improve the technical merit and the functional reliability of fire-fighting TT﹠C system.
The intelligent composite multiple-sensor fire detector that the present invention relates to provides continuous, and correct measurement data is carried out quantitatively for master controller and monitoring personnel, and qualitative analysis is made a strategic decision, and has increased monitoring personnel's workload and technical complexity.But considering catches fire is a kind of unexpected incidents, and the probability of generation is very low, therefore adopts three kinds of variablees that daily monitoring is simplified.These three kinds of variablees are respectively the limiting alarm parameters, minimum critical alarm parameters and sensor weights.Minimum critical alarming value is meant the minimum safe value, promptly when sensor measurement is no more than this value, even there is the information of catching fire also to be unlikely to cause consequence, has only when meeting or exceeding this value just as catching fire processing.The sensor weights are meant the degree of priority of the different sensors in same detector, and weights are high more, and then right of priority is high more, and its measurement result is at first paid attention to.When the sensor with highest weight value did not occur catching fire information, the sensor measurement of other weights can be downplayed.
The implication of limiting alarm parameter is meant when the measured value of a certain sensor reaches the ultimate value of regulation, no matter the measurement result of other sensor how, the intelligent composite multiple-sensor fire detector that the present invention relates to all will send alerting signal to master controller, this warning might not be fire alarm, but what reported is a kind of definite precarious position.Above-mentioned three kinds of variablees all are by the working environment of single detector and request for utilization assignment one by one.
Fig. 3 is one of preferred type embodiment of the intelligent multisensor combined fire detector that the present invention relates to, i.e. the sketch of intelligent temperature, humidity, CO, single source single chamber ionic smoke sensor combined fire detector, and Fig. 4 is the circuit block diagram of present embodiment.1-1-1 is a shell 1 among the figure, and 1-1-2 is a shell 2, is mechanical connection between 1-1-1 and the 1-1-2.1-1-3 is a circuit board, 1-2 is a wire netting, 1-3 is neuron chip Neuron C, 3150 chips that adopt Motorola Inc. to produce in this example, 1-4 receives/device for the line of electric force twisted-pair feeder, adopts the product of ECHELON company in this example, and 1-10 is an external clock, 1-6 is a data file, adopts 32KX8EPRM in this example.1-7 is the collecting sensor signal device, comprises multiway analog switch, wave filter, signal amplifier, sampling holder and A/D conversion equipment.1-8 is outside controlled plant control signal input/output interface.1-5-1 is a CO sensor square wave drive power supply, control signal is from neuron chip 1-3,1-5-2 is a humidity sensor constant voltage working power, 1-5-3 is an ion transducer constant voltage driving power supply, 9-1 is a temperature sensor, this example adopts HONEYWELL company product, 9-2 is the CO gas sensor, 9-3 is a humidity sensor, this example adopts U.S. HONEYWELL company product, 9-4 is single source single chamber ionic smoke sensor sensor, 9-4-1 is the collector plate of single source single chamber ion transducer, 9-4-2 is the emission pole plate and the radioactive source of single source single chamber ionic smoke sensor sensor, 9-4-3 is the fixed head of 9-4-2, and 9-4-4 is collector terminal and plug-in unit, and 9-4-5 is emitter terminal and plug-in unit.
Claims (7)
1. intelligent composite multiple-sensor fire detector, it comprises: shell (1), wire netting (2), sensor (9), control circuit and printed circuit board (11); It is characterized in that: described control circuit partly comprises: be respectively applied for the network service management, user's service and the communication supervisory neuron chip Neuronc (3) that meets the ISO/OSI seven layer model of chip internal; The sensor drive power supply (5) independently separately that is controlled by neuron chip (3); Sensor combinations (9); Peripheral control signal input/output interface (8) as output contact; Communication interface (4); Collecting sensor signal device (7) and external clock (10); Described sensor combinations (9) must comprise temperature sensor and humidity sensor; The control end of described sensor drive power supply (5) is connected with the end of Neuronc (3), and output terminal is connected with the probe power end; Output terminal in the collecting sensor signal device (7) connects with the corresponding pin of Neuronc (3) respectively; Output terminal in the sensor combinations (9) is connected with corresponding end in the data collector (7); Communication interface (4) is connected with the corresponding end of Neuronc (3); Output interface (8) connects and composes long-range driving interface, serial output interface with the corresponding end of Neuronc (3); External clock (10) is connected with the corresponding end of Neuronc (3).
2. a kind of intelligent composite multiple-sensor fire detector as claimed in claim 1 is characterized in that: also can comprise a data file (6) that is used to deposit LonTalk communication protocol and application program.
3. a kind of intelligent composite multiple-sensor fire detector as claimed in claim 1 is characterized in that: multiple separately independently sensor drive power supply (5) comprising: square wave power, the pulse power, constant voltage source, variable-voltage power supply; Described driving power (5) is subjected to the control of neuron chip (3), when communication interface (4) be line of electric force receive/when sending out device, power supply is from this transceiver, otherwise should establish the external power source interface in addition.
4. a kind of intelligent composite multiple-sensor fire detector as claimed in claim 1 is characterized in that: dissimilar sensor combination (9) wherein also should comprise the combination between gas sensor, ion smoke detector or the photoelectric sensor.
5. as claim 1 or 4 described a kind of intelligent composite multiple-sensor fire detectors, it is characterized in that: gas sensor comprises CO
2, CO, SO
2, methane, fuel-steam, alcohol vapour absorption sensor.
6. as claim 1 or 4 described a kind of intelligent composite multiple-sensor fire detectors, it is characterized in that: ion smoke detector comprises double source two chamber, single source single chamber, ionic smoke sensor devices and comprises a radioactive source, single source single chamber ionic smoke sensor sensor of two electrodes.
7. as claim 1 or 4 described a kind of intelligent composite multiple-sensor fire detectors, it is characterized in that: photoelectric sensor comprises reflection-type and Sun-shading type photoelectric smoke sensor and purple outside line flame sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97121828 CN1086493C (en) | 1997-12-02 | 1997-12-02 | Intelligent composite multiple-sensor fire detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97121828 CN1086493C (en) | 1997-12-02 | 1997-12-02 | Intelligent composite multiple-sensor fire detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1218907A CN1218907A (en) | 1999-06-09 |
| CN1086493C true CN1086493C (en) | 2002-06-19 |
Family
ID=5176477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97121828 Expired - Fee Related CN1086493C (en) | 1997-12-02 | 1997-12-02 | Intelligent composite multiple-sensor fire detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1086493C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217518A (en) * | 2014-07-28 | 2014-12-17 | 徐州中安科技股份有限公司 | Intelligent fire alarm and operating method thereof |
| CN105784972A (en) * | 2016-04-22 | 2016-07-20 | 安徽京师方圆信息技术有限公司 | Remote monitoring system of soil moisture |
| CN108049791A (en) * | 2017-12-07 | 2018-05-18 | 中山市天隆燃具电器有限公司 | A kind of smart home curtain for environment measuring |
| CN110426069B (en) * | 2019-06-26 | 2021-08-31 | 汉威科技集团股份有限公司 | Composite smoke sensing device and automatic calibration method thereof |
-
1997
- 1997-12-02 CN CN 97121828 patent/CN1086493C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1218907A (en) | 1999-06-09 |
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